GDEF Header

The GDEF table begins with a header that consists of a version number (Version), initially set to 0x00010000, an offset to a table defining the types of glyphs in the font (GlyphClassDef), an offset to a list defining attachment points on the glyphs(AttachList), and an offset to a ligature caret list (LigCaretList).

Example 1 at the end of this chapter shows a GDEF Header table.

GDEF Header

Type

Name

Description

fixed32

Version

Version of the GDEF table

—initially 0x00010000

Offset

Ž GlyphClassDef

Offset to class definition table for glyph type

—from beginning of GDEF header

Offset

Ž AttachList

Offset to list of glyphs with attachment points

—from beginning of GDEF header

Offset

Ž LigCaretList

Offset to list of positioning points for ligature carets

—from beginning of GDEF header